Carroll, Bernard J., McNeil, David L. and Gresshoff, Peter M. (1985) Isolation and properties of soybean [glycine-max (L) merr] mutants that nodulate in the presence of high nitrate concentrations.
Proceedings of the National Academy of Sciences of the United States of America,
82 12: 4162-4166. doi:10.1073/pnas.82.12.4162